It's already different. Steve's never kissed a guy before though in the modern day many have offered. He slides his hand into Bucky's hair as they kiss because it feels good and he knows it makes Bucky feel good.

He can't help the little blush that spreads across his cheeks at the touch of Bucky's tongue. It feels like everything is charged between them. If his eyes were open Steve would expect to see sparks.

He parts his lips and tentatively touches his tongue against Bucky's. This isn't exactly new but he hasn't done it often. It feels very intimate and Steve presses into the kiss harder seeking more. Anything Bucky's willing to give, really.